Thanks everyone for your input thus far. Here is my chemistry - just tested:
TC = 5.0
pH = 7.9
TA = 90
CH = 400
CYA = 75
NaCl = 4500
I added about 7 cups of muriatic acid which brought the pH down to 7.1 and TA down to 70.
Here is the drill: I've been lowering pH to about 7.3-7.4. Then it creeps up to 8.0 and higher. Then I add in acid usually in about 4 cup doses. Of course, this brings down the pH. Then a few days later, the pH comes back up, then add more acid. Of course, TA starts to come down so then I am adding baking soda too. Cycle repeats.
I am on a well and the water is very soft and fairly neutral, but I do not add water to the pool very often. It rains maybe once a week. I guess I should do a complete round of tests on my well water just to see. But again, I rarely add water from my well so that is probably not the cause of pH constantly going up.
Under the post from "mikemass," he mentions about a lower TA recommendation from TFP. Could someone pass that on? Also, what is an acid doser?
If anyone else has any other thoughts, please pass. In the meantime, I turned off the SWG and will see what happens
Thank you!
Captain K